# Relationship history for MSHA mine 4002603

Current hierarchy: **Hamilton Hollie → Pinnacle Mining Inc → No 1 Tipple**

- Valid-time bounds: inclusive, date granularity
- Null end: open-ended in the upstream history row; not independent proof of present control
- Transaction-time observation: 2026-10-13T11:19:05.459773+00:00

## Valid-time edges

- **operator_operates_mine:** Cross Mountain Processing Company Inc → No 1 Tipple; 1980-02-01 to 1981-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Anderson G M → No 1 Tipple; 1980-02-01 to 1981-08-31; source msha-controller-operator-history
- **controller_controls_operator:** Anderson G M → Cross Mountain Processing Company Inc; 1980-02-01 to 1981-08-31; source msha-controller-operator-history
- **controller_controls_mine:** Williamson Charles O → No 1 Tipple; 1981-07-01 to 1982-03-14; source msha-controller-operator-history
- **operator_operates_mine:** Grey Wolf Mining Inc → No 1 Tipple; 1981-09-01 to 1982-03-14; source msha-controller-operator-history
- **controller_controls_operator:** Williamson Charles O → Grey Wolf Mining Inc; 1981-09-01 to 1982-03-14; source msha-controller-operator-history
- **controller_controls_mine:** Robertson C T → No 1 Tipple; 1982-02-26 to 1982-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Mining Inc → No 1 Tipple; 1982-03-15 to 1982-09-06; source msha-controller-operator-history
- **controller_controls_operator:** Robertson C T → Pinnacle Mining Inc; 1982-03-15 to 1982-09-06; source msha-controller-operator-history
- **operator_operates_mine:** Pinnacle Mining Inc → No 1 Tipple; 1982-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_mine:** Hamilton Hollie → No 1 Tipple; 1982-09-07 to current/open; source msha-controller-operator-history
- **controller_controls_operator:** Hamilton Hollie → Pinnacle Mining Inc; 1982-09-07 to current/open; source msha-controller-operator-history